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Examines the 375-GHz-bandwidth photoconductive detector. Fabrication of the photoconductive detector based on low-temperature grown GaAs; Measurement of the response time by external electro-optic sampling; Performance of the device in the switching mode.

Presents a study which demonstrated that InP:Fe photoconductive detectors are sensitive to radiation. Characteristics of photoconductive detectors that make them attractive for a wide variety of applications; Theory of operation of photoconductive detectors; Details of the experiment on...

We have built a five-channel, x-ray detector array based on diamond photoconducting detectors (PCDs). The diamond elements have dimensions of 3 mm Ã— 1 mm Ã— 1 mm (or 0.5 mm). We use diamond PCDs for their stability, flat spectral response, and low leakage currents. The good time response...

We have measured, for the first time, the continuous infrared (Î»âˆ¼10 Î¼m) photoconductivity spectrum, for an intersubband absorption photoexcited tunneling quantum well detector. The line shape is broadened and asymmetrical with respect to the zero-bias Lorentzian absorption spectrum....

Steady-state and transient responses of a nonintentionally doped GaN photodetector are investigated. The kinetics of the photoresponse demonstrate the existence of deep levels in the gap, acting as recombination centers with an acceptor character. The photoresponse displays two competing...

Photocurrent (PC) transient characteristics of an AlGaN/GaN heterostructure UV detector have been studied. We observed that the PC transients of the AlGaN/GaN heterostructure depended strongly on its initial conditions. Under a pulsed laser excitation, the PC responsivity, dark current level,...

Presents reverse biased photoconductive detectors and switches with separate absorption and detection area. Achievement of very fast carrier transfer; Result of the combination of narrow contact spacings and small RC and diffusion time constants; Performance of measurements in the frequency and...